Three service models exist for delivering a wide range of computing capabilities, from basic infrastructure and computing power to specific applications. In addition, there are three common models for cloud computing deployment that enable you to provide your organization with data, applications and even hardware “in the cloud” and made available – on demand, scalable and securely – to your organization no matter where they need the resources.
Logicalis can help you determine the best cloud computing services, deployment models and strategy for utilizing cloud computing in your organization and then develop and execute a plan to meet your goals. Our approach involves the Logicalis Cloud Computing Platform, backed by our award-winning Logicalis Virtual Data Center.
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Cloud Computing Service Models
Platform as a Service (Paas) — The capability to deploy onto the cloud infrastructure applications created using programming languages and tools supported by a Cloud Computing provider. Your organization does not manage or control the underlying cloud infrastructure – including network, servers, operating systems, or storage, but you have control over the deployed applications and possibly application hosting environment configurations.
Infrastructure as a Service (IaaS) — The capability to provision processing, storage, networks, and other fundamental computing resources where your organization is able to deploy and run software – including operating systems and applications. You don’t manage or control the underlying cloud infrastructure but you have control over operating systems, storage, deployed applications, and possibly limited control of select networking components (e.g., host firewalls).
Software as a Service (SaaS) — The capability to use a Cloud Computing provider’s applications running on a cloud infrastructure. The applications are accessible from various client devices through a thin client interface such as a web browser (e.g., web-based email). You don’t manage or control the underlying cloud infrastructure including network, servers, operating systems, storage, or even individual application capabilities, with the possible exception of limited user-specific application configuration settings.
Cloud Computing Deployment Models
— The cloud infrastructure is operated solely for an organization and may be managed by the organization or a third party and may exist on premise or off premise.
— The cloud infrastructure is made available to the general public or a large industry group and is owned by an organization selling cloud services.
— The cloud infrastructure comprises two or more clouds (e.g. private or public) that remain unique entities but are bound together by standardized or proprietary technology that enables data and application portability (e.g., cloud bursting for load-balancing between clouds).
Source: National Institute of Standards and Technology, Information Technology Laboratory